Indebtedness (Details) - Line of Credit - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Mar. 31, 2024	Sep. 30, 2023
Credit Facility Floating Rate 364-Day Tranche
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			$ 500,000
The Credit Facility Floating Rate Three-Year Tranche
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			500,000
The Credit Facility Floating Rate Three-Year Tranche | Floating Rate 364-Day Tranche
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 250,000
The Credit Facility, Terminated
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			500,000
The Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			1,500,000
The Credit Facility | Secured Debt | Reata Pharmaceuticals, Inc
Debt Instrument [Line Items]
Long-term debt, gross			$ 1,000,000
2023 Term Loan | Floating Rate 364-Day Tranche
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		150,000
Repayments of Short-Term Debt, Maturing in More than Three Months	$ 350,000
2023 Term Loan | 2023 Term Loan Three-Year Tranche
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 250,000